Circle brace



June 3, 19,24. 1,496,369

5. B. DURBIN ET AL cI'RcLE: BRAGE Filed March 10 1923 INVENTOlfS V6,3520% 2 77 /6 y I i077 'A T RNEY.

Patented June 3, 124.

TTES PATENT OFFICE.

SAMUEL B. DURBIN', OF TULSA, AND JOSIAH V. BOLTON, F JENKS, QKLAHO'MA.

CIRCLE Barron.

Application filed March 10; 1923. Serial No. 624,186.

To all whom it may concern:

Be it known that we, SAMUEL B. DURBIN and 'JosIAH ,V. BoL'roN, citizensof the United States residing at Tulsa and Jenks,

respectivel 1n the county of Tulsa and State of klahoma, have inventedcertain new and useful Improvements in Circle Braces of which thefollowing is a specification, .referencebeing had to the accompanying.drawings.

This invention relates to certain improvements in circle braces and itis an object of the invention to provide a device of this generalcharacter with novel and improved means whereby the same will not breakor slip when in use and which may be readily adjusted as the occasionsof practice may demand.

It is also an object of the invention to provide a novel and improveddevice of this general character wherein the jaw is secured to the bodyof the brace in a manner whereby the jaw will square against thedrilling tools irrespective of the angle in which the body of the bracemay be arranged.

The invention consists in the details of construction and in thecombination and arrangement of the several parts of our improved circlebrace whereby certain important advantages are attained and the devicerendered simpler, less expensive and otherwise more convenient andadvantageous for use, as will be hereinafter more fully set forth.

The novel features of our invention will hereinafter be definitelyclaimed.

In order that our invention may be the better understood, we will nowproceed to describe the same with reference to the accompanyingdrawings, wherein:

Figure 1 is a view in side elevation of a circle brace constructed inaccordance with an embodiment of our invention and in applied position,the coacting drilling tool and rack of the oil well jack being indicatedby broken lines;

Figure 2is a view in plan of the brace as herein disclosed;

Figure 3 is a view partly in elevation and partly in longitudinalsection of the device as herein disclosed;

Figure 4 is a view in plan of the base adapted to be employed with thebrace to turn said brace into a jack;

Figure 5 is a cross sectional view of the base illustrated in Figure 4.

As disclosed in the accompanying drawings, 1 denotes a jaw made of'highgrade steel and tempered to prevent the wickers 2 formed on theworkingface of said jaw from flattening. The rear of the'jaw 1 isprovidedwith' an outstanding fiange 3 which snugly fits within a groove4 provided in the adjacent face of the head 5. Extending through thehead 5 and the flange 3 of the jaw 1 is a pin 6 whereby said jaw l andhead 5 are elfectively maintained in assembled relation.

The inner or opposite face of the head 5 is provided with a socket 7 inthe base portion of which snugly fits the ball 8 arranged at anextremity of an elongated threaded member or shank 9. Disposed throughthe ball 8 of the adjacent portion of the head 5 is a pin 10 formaintaining said head 5 and member or shank 9 in assembled relation. Theconnection between the head 5 and the member or shank 9 permits the jaw1 to sit square against the drilling tools, as illustrated in Figure 1.

11 denotes an elongated tubular body or member having its opposite endsopen and inserted within the opposite end portions of said body ormember 11 are the sleeves 12 preferably pressed in applied position. Themember or shank 9 is threaded through one of the sleeves 12 Whilethreaded through the second sleeve 12 is an elongated member or shank1 1. It is to be noted that the members or shanks 9 and 14 are reverselythreaded so that upon rotation of the member 11 the brace will belengthened or shortened as the necessities of practice may prefer.

The outer extremity of the member or shank 141 is flattened as at 15 andis adapted to abut, when the brace is in applied position, against therack 16 of an oil well jack such as the Barrett. Our improved brace whenapplied effectively accomplishes the purposes desired and by the use ofour improved brace time and labor is saved owing to the fact that saidbrace is light, strong, safe and quick adjustable.

It is also possible to employ our brace as a jack and in so doing weemploy a base 17 having in its central portion a slot or recess 18 inwhich is fitted the flattened or tapered portion of the member or shank14. \Vhen used as a jack our improved device has been found to be ofspecial importance in jacking up sand reels, bull Wheels, shafts andbearings and also for moving engines engine foundations, etc. We alsofind our improved device to be of particular advantage for moving wirelines or any other thing of ordinary heft.

From the foregoing description it is thought to be obvious that a circlebrace constructed in accordance with our invention is particularly welladapted for use by reason of the convenience and facility with which itmay be assembled and operated, and it"will also be obvious that. ourinvention is susceptible of some change and modification Withoutdeparting from the principles and spirit thereof and for this reasonwedo not wish to be understood as limiting ourselves to the precisearrangement and formation of the several parts herein shown in carryingout our invention in practice except as hereinafter claimed.

We claim A device of the class described comprising a tubular body,threaded shanks engaged with the oppositeend portions of the body, saidshanks being reversely directed a head provided with a socket, the outerextremity of one of the shanks being provided with a ball snugly fittingwithin the base portion of the socket of the head, a pin connecting saidhead and ball, a face of thehead remote from the socket being providedwith a groove, a jaw'having-a flange fitting within said groove, andmeans coacting with said head and flange for holding the jaw in appliedposition.

In testimony whereof we hereunto aflix our signatures.

SAMUEL DURBIN. JOSIAH v. BOLTON.

